Tools

Step 1 - The principle

The principle of operation of this pump is very simple.

When the piston is raised, a vacuum is created. It will attract water from the pool through the anti return system from below. The other valve is in the other direction, the water from the outlet is not sucked in.

When the piston is lowered, an overpressure is created, which will close the bottom check valve, and open the other valve. The water can then come out.

This type of pump is called a "delivery pump".

Step 2 - The preparation :

Without sticking the pieces, the purpose of this step is to check the material.

Nest the elements as shown in the following diagram:

You can even test the operation.

To optimize : areas surrounded in blue should be as short as possible.

Step 3 - The assembling of the handle

Once the verification is done, the assembly can begin.

You simply have to glue the elements with PVC glue and check the sealing at the end.

How to glue ?
- Grind with fine sandpaper the parts to be assembled
- Clean with a cloth soaked in paint stripper.
- Apply the glue at the inlet of the female part and on the entire male part.
- Immediately engage fully, without twisting.
- Wipe off glue burrs.

The drying time is about 1h, but if the water is to be consumed, it is advisable to wait between 12h and 24h for the toxic solvents to disperse.

Step 4 - The pump casing assembly

Glue all the pieces then once dry, drill and screw in the middle of the 50mm-50mm coupling.

You can also nail (see picture) very well by drilling with a smaller diameter.